JPH0427431U - - Google Patents
Info
- Publication number
- JPH0427431U JPH0427431U JP1990067124U JP6712490U JPH0427431U JP H0427431 U JPH0427431 U JP H0427431U JP 1990067124 U JP1990067124 U JP 1990067124U JP 6712490 U JP6712490 U JP 6712490U JP H0427431 U JPH0427431 U JP H0427431U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- sector
- photointerrupter
- timer
- shutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/10—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device a servo-motor providing energy to move the setting member
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/18—Signals indicating condition of a camera member or suitability of light
- G03B17/20—Signals indicating condition of a camera member or suitability of light visible in viewfinder
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B43/00—Testing correct operation of photographic apparatus or parts thereof
- G03B43/02—Testing shutters
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/26—Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B9/00—Exposure-making shutters; Diaphragms
- G03B9/58—Means for varying duration of "open" period of shutter
- G03B9/62—Means for varying duration of "open" period of shutter by varying interval of time between end of opening movement and beginning of closing movement
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Shutters For Cameras (AREA)
- Exposure Control For Cameras (AREA)
Description
第1図は本考案によるカメラ用シヤツタのブロ
ツク図、第2図は第1図に係わるセクターおよび
ロータの構成図、第3図は第1図に係わる回路図
、第4図はシヤツタ開閉のシーケンスを示す動作
図である。
1……ロータ(モータ)、5……ステータ(モ
ータ)、6……モータコイル(モータ)、16,
17……セクター、19……フオトカプラ(フオ
トインタラプタ信号出力手段)、20……シヤツ
タ異常検出回路(手段)、TIM……タイマー。
Fig. 1 is a block diagram of a camera shutter according to the present invention, Fig. 2 is a configuration diagram of sectors and rotors related to Fig. 1, Fig. 3 is a circuit diagram related to Fig. 1, and Fig. 4 is a shutter opening/closing sequence. FIG. 1... Rotor (motor), 5... Stator (motor), 6... Motor coil (motor), 16,
17... sector, 19... photo coupler (photo interrupter signal output means), 20... shutter abnormality detection circuit (means), TIM... timer.
Claims (1)
開閉するセクターと、前記セクターに設けられた
検出部を介して発光素子から受光素子へ投光され
る光束で動作しフオトインタラプタ信号を出力す
るフオトインタラプタ信号出力手段と、前記フオ
トインタラプタ信号でセツトされ所定の時間計数
後にリセツトするタイマーと、前記タイマーが前
記所定の時間計数を完了する前に前記フオトイン
タラプタ信号のレベルが変化しないときは前記セ
クターを閉成し異常信号を出力するシヤツタ異常
検出手段とを備えたことを特徴とするカメラ用シ
ヤツタ。 a motor, a sector that opens and closes a shutter opening by rotation of the motor, and a photointerrupter signal that operates with a luminous flux projected from a light emitting element to a light receiving element via a detection unit provided in the sector and outputs a photointerrupter signal. output means; a timer that is set by the photointerrupter signal and reset after a predetermined time count; and a timer that closes the sector when the level of the photointerrupter signal does not change before the timer completes the predetermined time count. 1. A shutter for a camera, comprising shutter abnormality detection means for outputting an abnormality signal.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990067124U JP2517473Y2 (en) | 1990-06-25 | 1990-06-25 | Camera shutter |
DE4120451A DE4120451B4 (en) | 1990-06-25 | 1991-06-20 | camera shutter |
US07/719,875 US5181063A (en) | 1990-06-25 | 1991-06-24 | Camera shutter |
GB9113598A GB2246642B (en) | 1990-06-25 | 1991-06-24 | Camera shutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990067124U JP2517473Y2 (en) | 1990-06-25 | 1990-06-25 | Camera shutter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0427431U true JPH0427431U (en) | 1992-03-04 |
JP2517473Y2 JP2517473Y2 (en) | 1996-11-20 |
Family
ID=13335843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990067124U Expired - Lifetime JP2517473Y2 (en) | 1990-06-25 | 1990-06-25 | Camera shutter |
Country Status (4)
Country | Link |
---|---|
US (1) | US5181063A (en) |
JP (1) | JP2517473Y2 (en) |
DE (1) | DE4120451B4 (en) |
GB (1) | GB2246642B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5761552A (en) * | 1993-03-01 | 1998-06-02 | Nikon Corporation | Camera having shutter instrumentation device for measuring shutter speed |
GB2309535B (en) * | 1996-01-26 | 2000-08-09 | Asahi Optical Co Ltd | Exposure controlling device for camera |
US5953545A (en) * | 1996-01-26 | 1999-09-14 | Asahi Kogaku Kogyo Kabushiki Kaisha | Exposure controlling device for camera |
JPH11288019A (en) * | 1998-04-03 | 1999-10-19 | Seiko Precision Inc | Shutter for camera |
JP4384284B2 (en) * | 1999-03-16 | 2009-12-16 | オリンパス株式会社 | camera |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502932A (en) * | 1973-05-09 | 1975-01-13 | ||
JPH0625837B2 (en) * | 1984-05-09 | 1994-04-06 | 株式会社精工舎 | Shutter for camera |
GB2185586B (en) * | 1986-01-13 | 1989-11-22 | Seikosha Kk | Shutter control device for a camera |
JPS62186237A (en) * | 1986-02-12 | 1987-08-14 | Minolta Camera Co Ltd | Camera having bimorph driving element |
DE3843437C2 (en) * | 1987-12-26 | 1994-02-24 | Seikosha Kk | Device for actuating the closure wing of a closure |
JP2529345B2 (en) * | 1988-04-01 | 1996-08-28 | 富士写真フイルム株式会社 | Program shutter drive |
-
1990
- 1990-06-25 JP JP1990067124U patent/JP2517473Y2/en not_active Expired - Lifetime
-
1991
- 1991-06-20 DE DE4120451A patent/DE4120451B4/en not_active Expired - Fee Related
- 1991-06-24 US US07/719,875 patent/US5181063A/en not_active Expired - Lifetime
- 1991-06-24 GB GB9113598A patent/GB2246642B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4120451A1 (en) | 1992-01-02 |
JP2517473Y2 (en) | 1996-11-20 |
GB2246642A (en) | 1992-02-05 |
DE4120451B4 (en) | 2005-10-27 |
GB2246642B (en) | 1994-04-06 |
GB9113598D0 (en) | 1991-08-14 |
US5181063A (en) | 1993-01-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |